Quotes from Vivekachudamani of Shankaracharya

People may quote the scriptures, make sacrifices to the gods, perform actions and pay homage to the deities, but there is no liberation without recognizing the oneness of one's own true being.

‘Brahman is the Truth and the world is unreal.’ It is this realization that is considered discrimination between the permanent and the impermanent.

A buried treasure will not come out just by calling it, but needs a good map, digging, removal of obstructing stones and so on to get at it. In the same way the pure reality, hidden by the effects of Maya, cannot be achieved by just abusing it or through mental trick, - you can reach it only by instruction from a knower of God, reflection, meditation and so on.

Vivekachudamani Adi Shankaracharya